CN1158795C - Communication time-interval with multiple serviceability - Google Patents
Communication time-interval with multiple serviceability Download PDFInfo
- Publication number
- CN1158795C CN1158795C CNB001081616A CN00108161A CN1158795C CN 1158795 C CN1158795 C CN 1158795C CN B001081616 A CNB001081616 A CN B001081616A CN 00108161 A CN00108161 A CN 00108161A CN 1158795 C CN1158795 C CN 1158795C
- Authority
- CN
- China
- Prior art keywords
- time slot
- data
- phone
- segment length
- period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present invention relates to being able to adjust a time period of a time slot in a communication channel, depending on the information being sent in the time slot. In one embodiment of the present invention, a process and system for automatically adjusting a time period of a time slot in a communication channel is presented. The communication channel is monitored. A determination is made to see whether data are being transmitted in a time slot in the communication channel. The time slot is adjusted to a first time period if data are being transmitted in the time slot. The time slot is adjusted to a second time period if data are not being transmitted in the time slot.
Description
Technical field
Generally speaking, the present invention relates to communication system and method, in particular to the method and system of regulating the time slot period in the communication channel according to institute's transmission information.
Background technology
On the current market multiple multichannel telephone system is arranged.A kind of multiloop loop system is called " key telephone system ".There is the phone of a plurality of being called " keyphone " in this system, and the center control cabinet of " keying service unit (KSU) " linked one and be called by each phone by communication media.
Key telephone system has some potential problems.A problem relates to links control cabinet required line in center to each phone in the system.Another problem is because in most of intelligent quilt centre control cabinet, so there is a single failure point in system.
On the other hand, the multichannel telephone system of no KSU does not need the keying service unit.Phone in the system is interconnection each other just.Its intelligent distribution arrives in the middle of each single phone, rather than concentrates among the KSU.So the system of no KSU may be desirable especially, particularly in little commercial affairs or work-at-home room environmental.
Summary of the invention
Present inventors recognize even provide the importance of the abundant environment of a kind of performance in no KSU telephone system.Present inventors also recognize in a kind of effective and economical mode provides these performances so that these systems can squeeze into the importance in SOHO (small office/family office) market.
In view of this, the present invention relates to according to the time slot period in institute's transmission information adjusting communication channel.In one embodiment of the invention, provide the method for the time slot period in the automatic adjusting communication channel, comprised following steps:
Monitor described communication channel;
Determine whether transmitting data in the time slot in described communication channel;
If in described time slot, transmitting data, then described time slot is adjusted to first o'clock segment length; And
If in described time slot, do not transmit data, then described time slot is adjusted to second o'clock segment length.
Description of drawings
Fig. 1 shows the system architecture of one embodiment of the invention.
Fig. 2 is the detailed diagram of used phone among the present invention.
The characteristics of Fig. 3 A and 3B difference display system speech and data communication channel.
Fig. 4 shows the various structures and the duration of a kind of agreement of using among the present invention.
Fig. 5 shows the command list according to agreement of the present invention.
Fig. 6 is the flow chart of initialization and synchronization process.
Fig. 7 illustrates caller ID (id) information packet.
Fig. 8 is the example flow diagram of regulating time slot according to the present invention.
Fig. 9 is the detailed realization of speech channel security feature.
The speech channel security feature that Figure 10 A and 10B realize according to principle of the present invention with the example explanation.
Figure 11 A and 11B are with the group busy characteristic of example explanation according to principle realization of the present invention.
Embodiment
Fig. 1 shows the example that can realize no KSU telephone system of the present invention.This system comprises a plurality of phone 10-1 to 10-n, and they interconnect each other, and link past/return telephone wire 11-1 to 11-n in a central office.System 1 also comprises a voice mail server 15 and a caller ID (sign) server 19.Caller ID server 19 can be handled caller's id information of receiving.The speech letter of voice mail server 15 energy treatment systems 1.
In the present embodiment, each the phone 10-1 to 10-n in the system 1 needs to link to each other with 11-2 with line 11-1.This is because line 11-1 is used for control data communication, and line 11-2 is used for the voice communication between the phone, hereinafter will do more detailed the explanation to this.
Fig. 2 shows the hardware block diagram of one of representative phone 10-1 to 10-n shown in Figure 1.Each phone 20 comprises a line interface circuit 21, and it can be linked on 4 pairs of telephone wires selecting from circuit 11-1 to 11-n shown in Figure 1.Every couple of telephone wire 1-4 represents a pair of TR tip and ring line.The function of line interface circuit 21 provides circuit and sets and the line status sensing.It also provides the circuit between 4 telephone wires to switch and bridge joint, to realize for example conference capability.
In addition, phone 20 also comprises a RF (radio frequency) part 25.RF part 25 comprises the circuit 11-2 that a transceiver circuitry 22 is used to link multiloop loop system 1.Such as previously mentioned, the circuit 11-2 of system is designated as the communication media that voice communication is used in the system, as is used for intercommunication mutually or paging between the 10-1 to 10-n of system.Transceiver 22 can send and be received in 3 of carrying on the circuit 11-2 by the voice-grade channel of RF modulation and frequency multiplex.One of these voice-grade channels are used for the paging of half-duplex mode, intercom mutually and other two channels are used for full duplex.In Fig. 3 A, listed the example feature of these voice-grade channels.Suitable IC (integrated circuit) example that can realize transceiver 22 functions is the MC 13109 that can obtain from Motorola (Motorola).
Also have a transmitter 24 and 23 pairs of receivers to be used to realize data channel.As previously mentioned, this data channel is used for transmitting system control and signal data in the middle of phone 10-1 to 10-n and any other Additional servers (as voice mail server 15 and caller ID server 19).Summary shows the feature of sample data channel among Fig. 3 B.The maximum bitrate of data channel is used the Manchester coding in the scope of 2Kbps.The modulation and demodulation method is arrowband FSK (frequency shift keying).The suitable IC example that can realize receiver 23 functions is the MC3361 that can obtain from Motorola.Transmitter 24 can be by what realize based on the split circuit of VCO, and this is a technique known.
Audio transceiver 22 and data transmitting and receiving machine are monitored and control by RF microcontroller 26 23 and 24.Microcontroller 26 monitors the state of these transceivers and communicates by letter with the host microcontroller 29 of phone 20.The various transceivers that RF microcontroller 26 is also responsible in the RF part of phone 20 produce timing signals.The RF microcontroller also is responsible for the physics and the link level control of the data channel that carries on circuit 11-1.The suitable IC example that can realize RF microcontroller 26 functions is the TMP87C808 that can obtain from Toshiba (Toshiba).
Discussed as mentioned like that, the phone 10-1 to 10-n in the no KSU system 1 uses the data communication channel that carries on the circuit 11-1 of this system communicating to each other, thereby realizes the various characteristics of this system.This data channel is further divided by the time slot allocation scheme, is shown as the element 401 of Fig. 4.As shown in Figure 4, data channel is divided into 32 packet time slots and 3 " incorporating (join-in) into " (for example J) time slots.To discuss the function and application of these time slots below in more detail.
When the phone 10-1 to 10-n in the system 1 interconnects first and switches on, at first give site identity separately (ID) to each phone by system administration manager.Then these phones will be only with its oneself site identity time slot corresponding data information.For example, can give a site identity 5 to a phone.So this phone is broadcast data on time slot 5 only.Yet each phone in the system 1 will be at this data channel of all time monitorings, whether needs any data on the response data channel so that see it.
The element 402 of Fig. 4 demonstrates the general data pack arrangement of an agreement that realizes the principle of the invention.As shown in Figure 4, typical data comprise 9 headers, 6 order of the bit words, 6 positional operand 1,6 positional operands, 2,8 bit checks and, 1 position of rest and 1 bit check (guard) position.Encoded by RZ Manchester for every, and continue 500 microseconds.Fig. 5 is shown as the grammer of the various command that realizes that the principle of the invention may be used by native system.
When a phone in the native system during by initial power-up, it is in the internal clocking free-run state according to oneself.Then, each of phone 10-1 to 10-n will according to shown in Figure 6 synchronously and recognizer attempt to make the every other phone in own and the system 1 synchronous.
As shown in the step 601 of Fig. 6, a phone in system 1 also has been endowed after the site identity by initial power-up, and this phone will wait for a period of time, and for example 5 seconds, as shown in step 602.This wait period provides the time to allow another phone that may begin initialization procedure in the system 1 remove to finish initialization procedure.
In step 605, after waiting for the period, this phone sees whether there is any effective order in data channel with the monitoring data channel.Going all out to do one's duty regardless of personal danger the present can be observed by an effective header, for example the header as shown in the element 402 of Fig. 4.This show in the system 1 other phones work and also in system 1, be synchronized.
In case observe an effective order, so this phone will be regulated its free-running operation clock of realizing in the software of RF microcontroller 26, with synchronous, as shown in step 607 with the system 1 that brings into play function.This phone can be learnt current which time slot that is in of this system by the original address of observed data bag, because this address is corresponding to this timeslot number.In step 609, this initialization phone also will be broadcasted one and be incorporated message in one of J time slot 405-407 (as shown in Figure 4).Shown an example of incorporating order in the element 502 of Fig. 5.The purpose of incorporating message into is that it is present in this system now to other telephone-broadcasts.If this is incorporated message into and is not rejected message refuses in a time period as shown in step 611, then this initialization phone has successfully become the part of function system 1.Subsequently, shown in step 630, phone sends packet when the time slot that is assigned with occurs once more.
In step 613, if do not observe effective order in a certain amount of time, this initialization phone will suppose that then it is to attempt initialized first phone in the system.So this phone will be chosen one of J1 to J3 time slot randomly and go to broadcast one and incorporate order into, as mentioned in integrating step 609 discussed like that.Be broadcast in case this incorporates message into, then as shown in step 619, other telephone systems that may exist will be used this order that they itself are synchronized with this at first to carry out initialized phone.Then, as shown in step 630,, this can in the time slot of site identity, begin transmission corresponding to it just at first carrying out initialized phone.
In another aspect of this invention, the packet time slot of data channel shown in Figure 4 can be expanded or compress, so that the dynamically transmission of the control of accelerating system 1 and order data.The expansion of a time slot and/or compression are based on the data that whether sending data in this time slot and sending which kind of type in the system 1.
According to the present invention, in Fig. 8, provided a flow chart, it allows each phone in the native system dynamically to regulate a time slots section.As shown in the step 801 of Fig. 8, and such as previously discussed, in the system each phone of bringing into play function always at the monitoring data channel to find any relevant data-message.So whether any phone in the system 1 can for example exist an effective header to determine whether there is any packet in a time slot by observing.As previously discussed, as shown in Figure 4, an effective header can comprise 1 of 8 zero heel.
So, if observing in a particular time-slot, a phone in the native system do not have packet, then as shown in the step 805 of Fig. 8, this phone will be reduced to 11ms to this particular time-slot.On the other hand, when a packet occupies a time slot, then this phone will need to determine that further which kind of type this packet is, as shown in step 803 and 807.Particularly, as shown in step 807, this phone need determine whether this packet is a caller ID (ID) bag.
As shown in step 805, if this phone specified data bag is not a caller ID bag, then this time slot will remain on 50ms, as shown in the element 401 of Fig. 4.On the other hand, if packet is a caller ID bag, then this time slot will be expanded by following mode.
The caller ID bag is used to transmit the calling caller-identification information, and this information was handled by caller ID server 19, for showing on a phone of system 1.The case representation of caller ID bag is the element 505 of Fig. 5 and is shown among Fig. 9.In the present embodiment, the caller-identification information of being received is divided into more than a packet, thereby can be in the caller-identification information of the transmission of operand 2 fields in the packet more than 64.
Specifically, as shown in Figure 7, the operand 2 of the first caller ID bag 701 contains a numeral, points out will transmit how many bags for this particular caller identification information.For these multiple calls person who transmits as shown in Figure 7 identifies bag, in a single day each phone in the system determines sending the length that a caller ID bag just increases this time slot in a time slot, so that allow whole caller ID bags one after the other transmit, as shown in Figure 7.Specifically, each phone in the system will be a conventional bag slot length (for example 50+1ms shown in the element 402 of Fig. 2) expansion, and its spreading factor equals by the definite caller-identification information bag number of the operand 2 of the first caller ID bag 701 (being 701a).Like this, whole caller-identification information is transmitted continuously, need not to wait until the time slot in following one-period.So the agreement that constitutes according to Fig. 8 allows a time slot dynamically to expand or compress according to the content of this time slot.
Flow chart among Fig. 8 is preferably realized as the software of being carried out by RF microcontroller 26 shown in Figure 2.As realize, microcontroller 26 is responsible for the physics and the link layer of data channels, also the two timing of the data transmitter 24 of control and monitoring data channel and data receiver 23.
In accordance with the principles of the present invention on the other hand in, user telephone line in can automatic protective system, thus do not have other phones can cut (pick up) this protected circuit.When this circuit is used for data, services, for example be used for modulator-demodulator or facsimile transmission, this point is beneficial especially.
Each phone of example system 1 as shown in FIG. 2 comprises a RJ-11 data jack 91.This data jack 91 can be by for example modulator-demodulator, facsimile machine or just plain old telephone (POT) use.The user can dispose this FPDP makes it link to each other with any one of 4 telephone line L1-L4, and phone 20 is connected by a slide switch in the line interface circuit 21 of Fig. 2.
Fig. 9 shows this formation in greater detail.Slide switch 92 is connected between the data jack 91 and telephone wire 1-4 (by R1-4 and T1-4 representative) of a phone in this system.Transducer 93 is linked a terminal of telephone jack 91 by sensing resistor R65.In this embodiment, transducer 93 comprises an optical coupler 94.So,,, link data jack and when working, will produce an electric current by resistance R 65 and by transducer 93 perception as modulator-demodulator or facsimile machine as a device.So produce a signal V-data-P and monitored by microcontroller 29.
In case microcontroller 29 perception V-data-P are effective (low), show the device that a job is arranged on FPDP, controller will be broadcasted a route protection order at the time slot of giving active cell on data channel.This route protection order is shown in the element among Fig. 5 501.
Figure 10 A shows the flow chart relevant with the route protection order with 10B.Figure 10 A is a process of transmitting, and Figure 10 B is a receiving course.In the step 102 of Figure 10 A, the phone that is connected to FPDP will monitor and determine whether this FPDP is like that used as described above.If this FPDP is to use, then this phone determines whether this port is connected in the circuit 1 or the circuit 2 of this phone in step 104.If protected circuit or circuit 1 or circuit 2, then this phone will send this route protection order, and wherein operand 1 is made as L1 or L2, as shown in step 106.On the other hand, if protected circuit is L3 or L4, this phone will be several 1 equipment L3 or the L4 of command operation.This phone also will be put into the corresponding extension number of this circuit the second operand of order.
At receiving terminal, each phone in the system will receive the route protection order of broadcasting as shown in Figure 10 A.In step 112, receive phone and will determine at first whether the operand 1 that is received orders contains L1 or L2.In step 114, if this condition is true, then the microcontroller 29 in this phone will be protected this circuit.The meaning of a circuit of protection is that the user of this phone can not visit this circuit.By lighting a LED related or an indication on LCD33 (as shown in Figure 2) with this circuit, can give visible indication of user, inform that specific circuit of user is protected.If this user still attempts to visit this circuit, then this phone can send audio beep, to inform that this circuit of this user can not be accessed.
On the other hand, if the operand 1 of the order of being received is L3 or L4, then receives phone and also will look at the operand 2 that received orders.As shown in step 116, it will be made comparisons the extension number of the extension number in the operand 2 and its L3 or L4.If the extension number coupling, then the microcontroller 29 of this phone will be protected corresponding L3 or L4.Otherwise as shown in step 120, the route protection order will be left in the basket, because the specific circuit that the transmission phone is attempted to protect does not link to each other with the circuit that receives phone physically.
In another aspect of this invention, system 1 also allows group's paging characteristic.Group's paging characteristic allows any phone in the system 1 to send unidirectional Speech Communication to the one group of phone that is in a community of interest.This characteristic is shown in Figure 11 A and 11B in accordance with the principles of the present invention, will discuss below.
The handling process of Figure 11 A explanation paging call.In step 111, when phone powered up for the first time and has been mounted, this phone was endowed its group number of belonging in system 1.In step 112, be to start group's paging characteristic, the user of this phone is with off-hook once or start speaker-phone once.
Then, as shown in step 114, this user can select all phones in the paging system 1 or select a group number to go paging.This can finish by the keyboard 32 and the LCD33 of system shown in Fig. 21.
In case selected one group, then the microcontroller 29 of paging call will be broadcasted " paging is a logical " order, shown in the element 509 of Fig. 5.This order has an operand 2, it comprise a current paging at group number.In case sent this order, " continuation " beeping sound just sounds.After the user hears this beeping sound, just this user can say his or her beep-page message, as shown in step 116 and 118.As preamble went through, the half-duplex audio frequency voice channel that this beep-page message carries on will the L2 circuit by system was carried.Paging will finish when the user is hung up paging call, perhaps end automatically in 30 seconds after paging, and which kind of situation this will see more hurry up.When paging unit send " paging disconnected " order (as Fig. 5 510 as shown in) time, paging stops.
Figure 11 B describes the receiving course of group's paging characteristic.At receiving terminal, the phone in paged group will be recognized " paging is logical " order (as described above) paging that it is being sent.In case being belonged to the phone of this group, this order receives, just as shown in step 122, produce a prompting tone to the user.This phone also will automatically be linked the half-duplex paging channel on the speaker-phone of paged phone, thereby can hear speech information from loud speaker, shown in step 124.Paged phone also is presented at the sign of calling party on the telephone displays 33, and this caller identification can obtain from " paging is logical " order.Paged telephone subscriber just can begin bidirectional dialog with paging call as long as answer this phone after hearing beep-page message.By receive phone send one " the logical order of mutual communication " (as Fig. 5 511 as shown in) just set up two-way intercommunication.As discussed earlier, intercommunication is that transceiver 22 by Fig. 2 carries out on two full duplex voice channels.
Should be appreciated that, show here and embodiment and the modification thereof described just are used to illustrate, and those skilled in the art can not depart from the scope of the present invention under the prerequisite with spirit and realize various modifications.
In accompanying drawing 5:
0 or 1-do not consider the recipient
N-from 0 to 31, promptly mostly is most 32 users
31-33 is exclusively used in new user
Incorporate into described and input time slot
L6, L5, L4, L3, the L2-=1 line work,
=0 circuit is not worked
EXT-4 position denary number (dispose the 1st, the 2nd,
3rd, the 4th digit order number is to constitute an extension number)
If extension number can not be used, for
An air separation machine is made as C, C, C, C
And input time slot-31 is to 33
Incorporate timestamp-0 into to 30
Messages-Waiting on/off (extension set),
Transmit logical-one order and support a circuit
Claims (10)
1. method of automatically regulating the time slot period in the communication channel is characterized in that comprising the following step:
Monitor described communication channel; And
Determine whether transmitting data in the time slot in described channel,
If in described time slot, transmitting data, then the period length adjustment to of described time slot first o'clock segment length; And
If in described time slot, do not transmit data, then the period length adjustment to of described time slot second o'clock segment length.
2. the method for claim 1 is characterized in that described first period was than described second o'clock segment length.
3. the method for claim 1 also comprises and determines whether the data that just are being transmitted comprise the step of a specific data type.
4. the method for claim 3 is if comprise also that described data comprise a specific data type then described time slot is adjusted to the step of the 3rd an o'clock segment length.
5. the method for claim 4 is characterized in that described the 3rd period was than described second o'clock segment length.
6. one kind is carried out data communications system in the middle of different units, it is characterized in that:
A data channel has a plurality of time slots that transmit and receive data for each unit;
Each unit comprises a microprocessor that is coupled to this data channel, is used for monitoring and handling this data; And
Described microprocessor is regulated the time segment length of one of described time slot according to the content of one of time slot.
7. the system of claim 6, it is characterized in that if in this time slot, have data the transmission described microprocessor is adjusted to first o'clock segment length to this time slot, if in this time slot, do not have data the transmission this time slot is adjusted to second o'clock segment length.
8. the system of claim 7 is characterized in that described first period was than described second o'clock segment length.
9. the system of claim 7 is characterized in that whether the further definite data that just are being transmitted of described microprocessor comprise a specific data type.
10. the system of claim 9 is characterized in that described microprocessor is adjusted to the 3rd an o'clock segment length to described time slot if these data comprise a specific data type.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/306,040 | 1999-05-06 | ||
| US09/306040 | 1999-05-06 | ||
| US09/306,040 US6882658B1 (en) | 1999-05-06 | 1999-05-06 | Flexible time slot for communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273484A CN1273484A (en) | 2000-11-15 |
| CN1158795C true CN1158795C (en) | 2004-07-21 |
Family
ID=23183486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001081616A Expired - Lifetime CN1158795C (en) | 1999-05-06 | 2000-05-08 | Communication time-interval with multiple serviceability |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6882658B1 (en) |
| EP (1) | EP1050981B1 (en) |
| JP (1) | JP4679691B2 (en) |
| KR (1) | KR100689714B1 (en) |
| CN (1) | CN1158795C (en) |
| DE (1) | DE60029381T2 (en) |
| MY (1) | MY124206A (en) |
| TW (1) | TW459454B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7768936B2 (en) * | 2006-06-23 | 2010-08-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transporting deterministic traffic in a gigabit passive optical network |
| US7813371B2 (en) * | 2007-03-21 | 2010-10-12 | Kapsch Trafficcom Ag | System and method for short range communication using adaptive channel intervals |
| FI125506B (en) * | 2013-09-10 | 2015-10-30 | Suunto Oy | Underwater transceiver, underwater communication system and associated communication method |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209840A (en) * | 1978-06-28 | 1980-06-24 | Honeywell Inc. | Data processing protocol system |
| JPS5977789A (en) * | 1982-10-27 | 1984-05-04 | Iwatsu Electric Co Ltd | Synchronization system of key telephone set |
| US4631367A (en) * | 1984-08-29 | 1986-12-23 | Lantel International Corp. | Multi-line telephone system |
| DE3527329A1 (en) * | 1985-07-31 | 1987-02-05 | Philips Patentverwaltung | DIGITAL RADIO TRANSMISSION SYSTEM WITH VARIABLE TIME SLOT DURATION OF TIME SLOTS IN TIME MULTIPLEX FRAME |
| JPH0220132A (en) * | 1988-07-08 | 1990-01-23 | Hitachi Cable Ltd | Data transmitting system |
| US5128928A (en) * | 1990-10-31 | 1992-07-07 | Rose Communications, Inc. | Digital radio telephone system |
| US6408008B1 (en) * | 1993-04-06 | 2002-06-18 | Creative Integrated Systems, Inc. | Circuit for attenuation of echos caused by line variations and an interfacing system for capacitively coupling a plurality of sources to a two-wire communication line |
| US5787115A (en) * | 1995-12-28 | 1998-07-28 | Northern Telecom Limited | Key telephone system without common control |
| KR970055675A (en) * | 1995-12-30 | 1997-07-31 | 유기범 | Personal communication terminal with power saving function through idle time slot receiving interval adjustment |
| GB2310972B (en) * | 1996-03-07 | 2000-06-14 | Motorola Ltd | Communication system and operating method thereof |
| JP3687229B2 (en) * | 1996-11-08 | 2005-08-24 | ソニー株式会社 | COMMUNICATION METHOD, BASE STATION, AND TERMINAL DEVICE |
| US5887054A (en) * | 1997-02-28 | 1999-03-23 | Lucent Technologies Inc. | Play and plug telephone system |
| CA2294542C (en) * | 1997-06-24 | 2007-03-20 | Siemens Aktiengesellschaft | Method and device for radiotransmission |
| US6240077B1 (en) * | 1998-07-09 | 2001-05-29 | Golden Gate Tele Systems Inc. | Dynamic wireless multiplexing — switching hub for providing two-way communications with subscriber units |
-
1999
- 1999-05-06 US US09/306,040 patent/US6882658B1/en not_active Expired - Lifetime
-
2000
- 2000-04-15 TW TW089107082A patent/TW459454B/en not_active IP Right Cessation
- 2000-05-02 JP JP2000133269A patent/JP4679691B2/en not_active Expired - Fee Related
- 2000-05-03 KR KR1020000023649A patent/KR100689714B1/en not_active IP Right Cessation
- 2000-05-05 MY MYPI20001957A patent/MY124206A/en unknown
- 2000-05-05 EP EP00401225A patent/EP1050981B1/en not_active Expired - Lifetime
- 2000-05-05 DE DE60029381T patent/DE60029381T2/en not_active Expired - Lifetime
- 2000-05-08 CN CNB001081616A patent/CN1158795C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001007778A (en) | 2001-01-12 |
| CN1273484A (en) | 2000-11-15 |
| DE60029381T2 (en) | 2007-07-19 |
| US6882658B1 (en) | 2005-04-19 |
| EP1050981A2 (en) | 2000-11-08 |
| EP1050981B1 (en) | 2006-07-19 |
| KR20000077136A (en) | 2000-12-26 |
| TW459454B (en) | 2001-10-11 |
| KR100689714B1 (en) | 2007-03-09 |
| MY124206A (en) | 2006-06-30 |
| DE60029381D1 (en) | 2006-08-31 |
| JP4679691B2 (en) | 2011-04-27 |
| EP1050981A3 (en) | 2003-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU679592B2 (en) | Method of invoking and cancelling voice or data service from a mobile unit | |
| CN101809892B (en) | Method and base station for managing calls in wireless communication networks | |
| CN100592752C (en) | Method for making direct speech phone call using blue-teeth terminal | |
| CN1298595A (en) | ACD with packet data based agent interconnect | |
| JPH10257195A (en) | 'plug and play' telephone system | |
| CN1314769A (en) | Process, terminal and foundation equipment for constituting terminal group of mobile radio communication network | |
| JP3532921B2 (en) | Method and system for providing supplementary services to mobile stations | |
| CN1158795C (en) | Communication time-interval with multiple serviceability | |
| US20030140145A1 (en) | Communication system and method therein | |
| CN1203653C (en) | Telephone port with automatic detection and protection | |
| US20040233901A1 (en) | Method and apparatus for establishing a wireless voice-over-IP telecommunication | |
| CN1273483A (en) | Calling in selected telephone group | |
| CN1053544C (en) | Coincidence quasi duplex centre-less frequency division multiple address and noise-resistance carrier communication system | |
| KR100400924B1 (en) | Apparatus and method for providing multi user service using call ID box | |
| CN101193263B (en) | Caller and called realization method for E1 private line conference TV system | |
| WO1993010618A1 (en) | Mobile telephone system for receiving and storing alpha-numeric information | |
| US20040082325A1 (en) | Man-machine interface of wireless access fixed unit | |
| JPH08251281A (en) | Cordless telephone system | |
| JPH0355066B2 (en) | ||
| CN1433644A (en) | Call progress management system, apparatus and method | |
| JPH07245769A (en) | Sub-rate isdn terminal adaptor | |
| JPH0823302A (en) | Telephone exchange | |
| CN1192111A (en) | Radio exchange system without main exchanger | |
| CN1250322A (en) | Multiple-direction and multiple communication system using for comprehensive basiness digital network service | |
| JPH11331428A (en) | Communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: I Si Eli Murli Nor, France Patentee after: THOMSON LICENSING S.A. Address before: France Bologne J Dicks Patentee before: THOMSON LICENSING S.A. |
|
| CP02 | Change in the address of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190528 Address after: Paris France Patentee after: Interactive digital CE patent holding Co. Address before: I Si Eli Murli Nor, France Patentee before: THOMSON LICENSING S.A. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040721 |
|
| CX01 | Expiry of patent term |